Algebraic expression the sum of 27 and twice the opposite of why

Apine tree that is 140 feet tall is added to the sample. how will this outlier affect the shape of the box plot?

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)